28230833280 has 512 divisors, whose sum is σ = 99800064000. Its totient is φ = 6745669632.

The previous prime is 28230833249. The next prime is 28230833299. The reversal of 28230833280 is 8233803282.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 203099451 + ... + 203099589.

It is an arithmetic number, because the mean of its divisors is an integer number (194922000).

Almost surely, 2^28230833280 is an apocalyptic number.

28230833280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28230833280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49900032000).

28230833280 is an abundant number, since it is smaller than the sum of its proper divisors (71569230720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28230833280 is a wasteful number, since it uses less digits than its factorization.

28230833280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356 (or 344 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

The spelling of 28230833280 in words is "twenty-eight billion, two hundred thirty million, eight hundred thirty-three thousand, two hundred eighty".